Herm Sprenger fur saver stainless steel choke collar. This collar will fit a dog with a neck circumference not more than 22 inches (56cm). The overall size of the collar is 25 inches (63 cm). The wire of this collar is 4mm. This dog training collar is designed to fit dogs with strong necks. Feed the chain through one of the end O-rings to form a loop and slip over the dog’s head. Please keep in mind that this collar is not adjustable. Long links of the collar are suitable for dogs with fine and long fur as the smooth texture of widely spaced wire will not tangle or damage the fur. Made in Germany.